There are only five things you need to remember: Sine guys are "up and down" guys Cosine guys are "back and forth" guys
The short length is The medium length is The long length is
Know where your angles are... Know And it's easy to remember the lengths at the angles:
All you really need are the sines and cosines because you can get all the others from these using basic identities: When you need to figure something out, just get in the habit of drawing a little unit circle. Works every time!
Let's do some! up and down guy short positive back and forth guy long negative up and down guy medium negative